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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> (D- <br /> 404 N "get Lane Walnut creek,CA 94598 (92S)9a8-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North,Ste D Petaluma,CA 94954 (707)791-1865 FAX(707)792-0342 <br /> ' Gettler Ryan/Geostrategies -- - -Client larol 1D Unocal-S-S#0123 �- ---- _ - --- Sampled 09/28%98 r _ <br /> 6747 Sierra Court Suite J Sample Descrlpt U-4 Received 09/28/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> = Analysis Method EPA 8010 Analyzed 10/07/98 <br /> Attention Deanna Harding Lab Number 9809H50-05 - _ Reported 11110198_ _ <br /> QC Batch Number GC1006980VOA32A <br /> Instrument ID GCHP32 <br /> Halogenated Volatile Organics (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Bromodichloromethane 1 0 N D <br /> Bromoform 10 N D <br /> Bromomethane 20 N D <br /> Carbon Tetrachloride 1 0 N D <br /> Chlorobenzene 1 0 N D <br /> Chloroethane - 20 N D <br /> Chloroform 10 N D <br /> Chloromethane 20 N D <br /> Dibromochloromethane 1 0 N D <br /> 1,2-Dichlorobenzene 1 0 N D <br /> 1,3-Dichlorobenzene 1 0 N D <br /> 1 4-Dichlorobenzene 1 0 N D <br /> 1,1-Dichlorcethane 1 0 N D <br />* Dichloroethane 10 N D <br /> -Dlchloroethene 1 0 N D <br /> cis-1,2-Dlchloroethene 1 0 N D <br /> trans-l,2-Dichloroethene 1 0 N D <br /> 1,2-Dichloropropane 1 0 N D <br /> cis-1,3-Dichloropropene 1 0 N D <br /> trans-1,3-Dichloropropene 1 0 N D <br /> Methylene chloride 10 N D <br /> 1,1,2,2-Tetrachloroethane 1 0 N D <br /> Tetrachloroethene 1 0 28 <br /> 1,1,1-Trichloroethane 1 0 N D <br /> 1,1,2-Trichloroethane 1 0 N D <br /> Trichloroethene 1 0 N D <br /> Trichlorofluoromethane 1 0 N D <br /> Vinyl chloride 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 4-Bromofluorobenzene 70 130 84 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> RGranic er <br /> ect Manager Page 18 <br />